The Adjective in Spanish agrees with the noun it qualifies, in gender
and number, as--

El periódico italiano: The Italian newspaper.
La prensa americana: The American press.

It generally _follows the nouns_ as in the above examples, although
exceptions will be found, _e.g._, when the adjective recalls to our mind
a quality which _is already known to belong to it_, it generally
precedes the noun, as--

He visto sus hermosas flores: I have seen his beautiful flowers.[30]
Adjectives form their plural in the same way as nouns.

[Footnote 30: His flowers are known (or supposed) to be beautiful, before
we say it.]

=Formation of the Feminine of Adjectives=.

Adjectives ending in _O_ change _O_ into =A=, as--

El sombrero blanco: The white hat.
La casaca blanca: The white coat.

Adjectives of NATIONALITY which end in a consonant add =A= to form the
feminine, as--

El sastre francés: The French tailor.